Tub and shower floors should be flat and sloped slightly towards the drain to ensure proper drainage and prevent water from pooling on the surface. The slope of the floor should typically be between 1/4 inch to 3/8 inch per foot, which is sufficient to allow water to flow easily towards the drain.
Having a flat and properly sloped floor is important to prevent water from accumulating on the surface, which can lead to standing water and create a breeding ground for bacteria and mold. It can also cause damage to the floor and walls over time, as excess moisture can seep into the subfloor and surrounding areas.
In addition to having a flat and sloped floor, it is also important to ensure that the drain is properly installed and functioning. This includes ensuring that the drain is properly positioned and sealed to prevent leaks and that it is clear of any debris or obstructions that could impede the flow of water.
Overall, ensuring that tub and shower floors are flat and properly sloped towards the drain is essential for maintaining a clean and safe bathing environment.